PEMISAHAN Zn MENGGUNAKAN LIGAN ASAM POLI(EUGENOKSI ASETAT) DENGAN METODE EKSTRAKSI CAIR-CAIR

Separation of Zn with poly(eugenoxyacetic acid) with liquid-liquid extraction have been counducted in four step that were determination of the optimum pH, determine optimum ligan volume, determine optimum extraction time, and determine optimum Zn concentration. The concentration of Zn in water phase was determined using Atomic Absorption Spectroscopy (AAS). %E is the number that show the effectiveness the extraction proccess. If the %E is bigger, it show that the extraction proccess is effective, and vice versa. The optimum condition for ion separation was occurred at pH 6, the carrier volume was optimum at 5 mL (1 × 10-3 M), the optimum extraction time was 24 hours and the concentration range of metals ion accurately extracted was 1 × 10-4 - 5 x 10-4 M with %E was 97.71

Pemisahan Ion Logam Berat Fe(III),Cr(III),Cu (II),Hi(II),Co(II),dan Pb(lI)Menggunakan Pengemban Ion Poli(Asam Eugenil Oksiasetat) dengan Metode Transpor Membran Cair

ABSTRACT Fe (III), Cr(lll), Cu(II), Ni(II), Co(II), and Pb(lI) metal ions had been separated using poly(eugenyl oxyacetic acid) as an ion ca"ier by bulk liquid membrane transport method. The effect of pH, polyeugenyl oxyacetic acid ion ca"ier concentration, nitric acid concentration in the stripping solution, transport time, and metal concentration were optimized. The result shOwedthat the optimum condition for transport of metal ions was at pH 4 for ion Fe(lII) and at pH 5 for Cr(III), Cu(II), Ni(II), Co(II), and Pb(/I) ions. The carrier volumes were optimum with concentration of 1 x 10.3 Mat 7.5mL for Cr(lll), Cu (II), Ni(II), Co(lI) ions and at 8.5 mL for Fe(lII) and Pb(lI) ions. The concentration of HN03 in stripping phase was optimum at 2 M for Fe(lII) and Cu(lI) ions, 1M for Cr(lll), Ni(lI) and Co(lI) ions, and 0.5 M for Pb(lI) ion. The optimum transport times were 36 h for Fe(lII) and Co(lI) ions, and 48 h for Cr(lll), Cu (II), Ni(II), and Pb(lI) ions. The concentration of metal ions accurately transported were 2.5 x 10-4M for Fe(lII) and Cr(lll) ions, and 1 M for Cu (II), Ni(II), Co(II), and Pb(lI) ions. Compared to other metal ions the transport of Fe(lII) was the highest with selectivity order of Fe(lII) > Cr(lll) > Pb(lI) > Cu(lI) > Ni(II) > Co(II). At optimum condition, Fe(lII) ion was transportedthroughthemembraneat 46.46%. . Keywords:poly(eugenyl oxyacetic acid), transport, liquid membrane, Fe (III), Cr(lll), Cu(II), Ni(II), Co(II), and Pb(lI) io

SYNTHESISOF POLYEUGENYLOXYACETICACID AS A CARRIER TO SEPARATE HEAVY METAL ION Fe (III), Cr(III), Cu(II), Ni(II), Co(II), AND Pb(lI) THAT USINGSOLVENT EXTRACTIONMETHOD Sintesis Polieugenil Oksiasetat sebagai Pengemban ...

ABSTRACT Polyeugenyl oxyacetic acid has been synthesized from polyeugenol and chloroacetic acid and applied to separate metal Fe(/II), Cr(lll), Cu(II), Ni(II), Co(ll), and Pb(lI) uslng solvent extraction method.pH effect, polyeugenyl oxyacetic acid ion ca"ier concentration, extraction time, and metal concentration optimized to gain optimum condition. The result of experiment indicated that polyeugenyl oxyacetic acid resulted the yellowed brown synthesis with melting point 125°C and yield 68.9%. The Characterizationof spectroscopy IR attributed by absorption to the area 1735,8 em -1as carbonyl extend vibration (C=O) acid and 1H-NMRthat was attributed by chemical shift at 4.6 ppm as carboxy proton (CHz-C=O).The metal separation optimum condition gained pH 3-6 for ion Fe(/II), pH 5 for ion Cr(lll), Ni(II), and Co(lI) and pH 6 for ion Cu(II), and Pb(II). Optimum carrier concentraction5 mL, 10mL, and 15mL for ion Fe(/II), and ion Cr(lll), Ni(II), Co(II),and ion Cu(II), Pb(lI) respectively.Extraction time 2.5 h for ion Fe(/II), 20 h for ion Cr(II\u27lt and 36 h for ion Cu(II), Pb(II), Ni(II), and Co(II). Metal concentration that would extracted correctly (0.75-5 x 10 M) for ion Fe(/II), (0.75-2.5x 1cr M) for ion Cr(/II), Ni(II), and Co(lI) and (0.75-1x 10\u27"M) for ion Cu(lI) and Pb(II). The best polyeugenil oxyacetic acid response to separate ion Fe(/II) than other ions with selectivity order Fe(/II» Cr(lll» Cu(II» Pb(II» Ni(II» Co(II). Keywords: polyeugenil oxyacetic acid, pH, extraction time, metal concentraction,solvent extractio

Separation Of Copper And Chromium Metal In Ultrabasic Rocks From Top Of Manoapa Region, Subdistrict Of Lasusua Southeast Sulawesi By Ligand of 2 - (Aminometil) Pyridine

Study on separation of ions chromium metal and copper in ultrabasic material located in the village to of Monapa subdistrict Lasusua Regency Kolaka Utara Province Sulawesi Tenggara was conducted. The aim of this study was to determine the ability of the ligand 2-(aminometil) pyridine to separate chromium metals and copper to pure metals and its application to separate the chromium metals (Cr) and copper (Cu) in ultrabasic material from the village of Puncak Monapa subdistrict Lasusua Regency Kolaka  Utara Province Sulawesi Tenggara by means of extraction method. The concentration of ions chromium metal (Cr) and copper (Cu) of the pure metals are extracted respectively 10 ppm, and the concentration of the ligand 2-(aminometil) pyridine is 10 ppm. For concentration ion chromium metal (Cr) and copper (Cu) in ultrabasic material with 20x and 30x dilution is 8.3875 and 1.3590 and 3.50 ppm and 2,001 ppm for the ions copper metal (Cu). Results of this research shomush that the ability of ligand 2-(aminometil) pyridine for extracting chromium metals (Cr) and copper (Cu) for a single pure metal has a percent extraction (%E) are respectively 79.375 % and 82.37 %. Separation ability of ions chromium metal (Cr) and ions copper (Cu) mixed are 77.625% and 79.96%. For its application in separating ions chromium metal (Cr) and copper (Cu) in ultrabasic material to 20 time dilution extraction are 74.51% and 71.35%, and 30 time dilution are 69.28% and 69.71%. Based on the results of the study ligand 2-(aminometil) pyridine is relatively better for ions copper metal (Cu) for extraction ions of pure metal and relatively similar to ultrabasic material

Perbandingan Kemampuan Aerasi Sembur (Spray) dengan Metode Adsorpsi Menggunakan Adsorben Serbuk Kulit Buah Kakao untuk Menurunkan Kadar Besi dan Mangan Pada Air Sumur Gali

Research on the use of the spray aeration method with adsorption of cocoa rind powder to reduce iron and manganese levels in dug well water has been carried out. This study aims to make comparisons from two methods to reduce iron and manganese in dug well water. The parameters optimized in this study are the aeration time and the variation of the addition of the adsorbent mass and the adsorption time. Based on the research results, the spray aeration time for 2 hours gave the optimal percentage reduction for Fe3+ and Mn4+ metal ions, namely 98.68% and 94.22%. Meanwhile, for adsorption using cocoa pod husk powder, the optimal reduction occurred in the adsorbent mass of 0.2 grams and the adsorption time of 60 minutes for iron and manganese 96.36% and 95.15%, respectively

SEPARATION OF Fe (III), Cr(III), Cu(II), Ni(II), Co(II), AND Pb(II) METAL IONS USING POLY(EUGENYL OXYACETIC ACID) AS AN ION CARRIER BY A LIQUID MEMBRANE TRANSPORT METHOD

Fe (III), Cr(III), Cu(II), Ni(II), Co(II), and Pb(II)  metal ions had been separated using poly(eugenyl oxyacetic acid) as an ion carrier by bulk liquid membrane transport method. The effect of pH, polyeugenyl oxyacetic acid ion carrier concentration, nitric acid concentration in the stripping solution, transport time, and metal concentration were optimized. The result showed that the optimum condition for transport of metal ions was at pH 4 for ion Fe(III) and at pH 5 for Cr(III), Cu(II), Ni(II), Co(II), and Pb(II) ions. The carrier volumes were optimum with concentration of 1 x 10-3 M at 7.5 mL for Cr(III), Cu (II),  Ni(II), Co(II) ions and at 8.5 mL for Fe(III) and Pb(II) ions. The concentration of HNO3 in stripping phase was optimum at 2 M for Fe(III) and Cu(II) ions, 1 M for Cr(III), Ni(II) and Co(II) ions, and 0.5 M for Pb(II) ion. The optimum transport times were 36 h for Fe(III) and Co(II) ions, and 48 h for Cr(III), Cu (II), Ni(II), and Pb(II) ions. The concentration of metal ions accurately transported were 2.5 x 10-4 M for Fe(III) and Cr(III) ions, and 1 M for Cu (II), Ni(II), Co(II), and Pb(II) ions. Compared to other metal ions the transport of Fe(III) was the highest with selectivity order of Fe(III) > Cr(III) > Pb(II) > Cu(II) > Ni(II) > Co(II). At optimum condition, Fe(III) ion was transported through the membrane at 46.46%.   Keywords: poly(eugenyl oxyacetic acid), transport, liquid membrane, Fe (III), Cr(III), Cu(II), Ni(II), Co(II), and Pb(II) ion

Studi Variasi Konsentrasi NaOH dan H2SO4 Untuk Memurnikan Silika Dari Abu Sekam Padi Sebagai Adsorben Ion Logam Pb2+ dan Cu2+

A study of variations in the concentration of NaOH and H2SO4 to purify silica from rice husk ash and its application as adsorbent of Pb2+ and Cu2+ Metal Ions. The NaOH concentrations used were 8%, 9%, 10%, 11%, 12% and 13% and H2SO4 concentrations were 5.4%, 8.16%, 10.88%, and 13.61%. The process of adsorption of Pb2+ and Cu2+ metal ions was carried out at pH (3, 4, 5, 6) and silica masses. The results showed the silica yield obtained in the form of white powder. The highest silica content at 12% NaOH concentration of 41.81% with a purity of 89.09% and H2SO4 concentration is 10.88% at 65.39% with a purity of 94.94% initial content 86.02%. The results of surface structure characterization using Scanning Electron Microscope (SEM) average size of particle diameter was 0.030 µm. Optimal adsorption process of Pb2+ and Cu2+ metal ions using silica from rice husk occurred at pH 6 and the adsorbent mass was 0.3 gram, the adsorption efficiency was 98% and 86.25% respectively with adsorption capacity of 0.96 mg/g for metal Pb2+ and 0.83 mg/g for Cu2+ metals

SYNTHESIS OF POLYEUGENYL OXYACETIC ACID AS A CARRIER TO SEPARATE HEAVY METAL ION Fe (III), Cr(III), Cu(II), Ni(II), Co(II), AND Pb(II) THAT USING SOLVENT EXTRACTION METHOD

Polyeugenyl oxyacetic acid has been synthesized from polyeugenol and chloroacetic acid and applied to separate metal Fe(III), Cr(III), Cu(II), Ni(II), Co(II), and Pb(II) using solvent extraction method. pH effect, polyeugenyl oxyacetic acid ion carrier concentration, extraction time, and metal concentration optimized to gain optimum condition. The result of experiment indicated that polyeugenyl oxyacetic acid resulted the yellowed brown synthesis with melting point 125 °C and yield 68.9%. The Characterization of spectroscopy IR attributed by absorption to the area 1735,8 cm -1 as carbonyl extend vibration (C=O) acid and 1H-NMR that was attributed by chemical shift at 4.6 ppm as carboxy proton (CH2-C=0). The metal separation optimum condition gained pH 3-6 for ion Fe(III), pH 5 for ion Cr(III), Ni(II), and Co(II) and pH 6 for ion Cu(II), and Pb(II). Optimum carrier concentraction 5 mL, 10 mL, and 15 mL for ion Fe(III), and ion Cr(III), Ni(II), Co(II), and ion Cu(II), Pb(II) respectively. Extraction time 2.5 h for ion Fe(III), 20 h for ion Cr(III), and 36 h for ion Cu(II), Pb(II), Ni(II), and Co(II). Metal concentration that would extracted correctly (0.75-5 x 10-4 M) for ion Fe(III), (0.75-2.5 x 10-4 M) for ion Cr(III), Ni(II), and Co(II) and (0.75-1 x 10-4 M) for ion Cu(II) and Pb(II). The best polyeugenil oxyacetic acid response to separate ion Fe(III) than other ions with selectivity order Fe(III)> Cr(III)> Cu(II)> Pb(II)> Ni(II)> Co(II).   Keywords: polyeugenil oxyacetic acid, pH, extraction time, metal concentraction, solvent extractio

Perbandingan Kemampuan Aerasi Sembur (Spray) dengan Metode Adsorpsi Menggunakan Adsorben Serbuk Kulit Buah Kakao untuk Menurunkan Kadar Besi dan Mangan Pada Air Sumur Gali

Research on the use of the spray aeration method with adsorption of cocoa pod husk powder to reduce iron and manganese levels in dug well water has been carried out. This study aims to make comparisons from two methods to reduce iron and manganese in dug well water. The parameters optimized in this study are the aeration time and the variation of the addition of the adsorbent mass and the adsorption time. Based on the research results, the spray aeration time for 2 hours gave the optimal percentage reduction for Fe3+ and Mn4+ metal ions, namely 98.68% and 94.22%. Meanwhile, for adsorption using cocoa pod husk powder, the optimal reduction occurred in the adsorbent mass of 0.2 grams and the adsorption time of 60 minutes for iron and manganese 96.36% and 95.15%, respectively

Pengaruh Kecepatan Putar Pengadukan dan Waktu Pendiaman Terhadap Rendemen dan Kualitas Minyak Kelapa Murni (VCO)

It as done a research on the influence of the rotational speed of stirring and standing time on the yield and quality virgin coconut oil (VCO). VCO is made with mechanical engineering variations stirring round and standing time. Variations in the rotational speed of stirring cream coconut milk is 372, 385, 449, 503, and 539 rpm. The results were obtained optimum rotational speed is 503 rpm with a yield 23.66 % (v/v). Variations coconut cream standing time is 6, 7, 8, 9, and 10 hours. The results  were obtained optimum standing time is 8 hours with a yield of 22.90 % (v/v), the water content of 0.17 %, acid content of 0.26 %, saponification value of 247.656 mg KOH/g of fat, and a peroxide value of 0.199 mL eq/kg